1 and pi are recognized mathematical constants in the world, and scholars often think that pi is the most mysterious and important number in all mathematics. Since ancient times, people have used many methods to calculate pi. According to the data obtained, it has reached 6 trillion digits after the decimal point. As for whether it can be completed in the future, it is still unknown.
2. Pi is also called "cyclic constant" or "equivalent number". The ancients tried to calculate pi with more and more edges. The more these sides, the closer to the area of the circle.
China understood pi earlier than the west, and Europeans won't use the symbol zero. It was not until the middle and late period that the symbol of zero was used through contact with Hindi and Arabic.
People have studied pi for nearly 4000 years, and one of the earliest known records of pi was written by an Egyptian.
5. The relationship between the vertical height of the pyramid and the perimeter and radius of its base is the same. 17th century, π was also applied to curves. In the 20th century, π was widely used in number theory, probability theory, chaos theory and other fields.
6. We can never really measure the area of a circle, because we can never really know the value of π. Pi is an irrational number, which means that its number always exists in a seemingly random sequence.
7. In Greek, π is the16th letter. In English, p is also the letter 16. Many people claim that it is more correct to say that a circle has infinite angles than to regard it as parallel.
8. If π is rounded to the ninth decimal place to calculate the thickness of the earth, the error within 25,000 miles will not exceed a quarter of an inch.
9. The letter π is the first letter of the Greek words "perimeter" and "perimeter", and the symbol π in mathematics represents the ratio of a circle to its diameter. In other words, π is a multiple of the diameter of a circle around it.
10. In Britain, in 2008, a mysterious crop circle showed a coded image, which happened to be the first 10 bit of pi.